Subject Code & Name: CH25201 – Chemical Process Calculations
Regulation: R-2025
Semester: II (Second Semester)
Branch: B.Tech. Chemical Engineering (Chem)
Credits / L-T-P: 4 Credits | L-T-P: 3-1-0
Course Objectives
- To introduce the fundamental principles of material and energy balances in chemical processes. To develop problem-solving skills using basic laws, property data, and flow diagrams.
- To equip students with tools including psychrometric charts and process simulators for practical process analysis.
Full Unit-wise Syllabus
Unit I – Measurement Systems, Units and Basic Chemical Calculations
Fundamental and derived units; unit conversions; dimensional consistency. Density, viscosity & volume – relationship with temperature, concentration, flow rate, pressure, force, work, and power. Molecular weight, atomic weight, empirical and molecular formulas, equivalent weight, average molecular weight. Physical Properties: Specific volume, specific gravity.
Activity: Evaluation of various properties of commonly used materials.
Unit II – Ideal Gases, Real Gases and Psychrometry
Boyle’s Law, Charles’ Law, Dalton’s Law, Amagat’s Law. Equations of state, Compressibility charts and their applications, Van der Waals equation, Real gas mixtures. Raoult’s Law and Henry’s Law. Vapour pressure and its significance. Concepts of absolute and relative humidity, dew point, humid volume, and humid heat; Use and interpretation of psychrometric charts.
Activity: Virtual Demonstration of Ideal and real gas behavior, and Determination of air properties from psychrometric charts.
Unit III – Material Balances
Material balance calculations for single-unit systems With and Without chemical reactions; Material balances for multi-unit systems.
Activity: Material balances in distillation, crystallization, and absorption processes, followed by class discussion.
Unit IV – Energy Balances
Systems involving Sensible heat, Latent heat and Chemical reactions (heat of combustion, heat of formation, and heat of reaction); Fuels and combustion.
Activity: Virtual Demonstration of Combustion process.
Unit V – Combined Material and Energy Balances
Steady-state systems, Methodology, Introduction to Process Simulation Tools.
Activity: Usage of Simulation tools for material and energy balance.
Course Outcomes (COs)
- CO1: Understand and explain the core concepts of process calculation in Chemical Engineering.
- CO2: Apply and analyse the material and energy balance in chemical processes.
- CO3: Apply the appropriate gas equation and interpret data in engineering applications.
- CO4: Demonstrate the ability to engage in adapting new techniques in the analysis of chemical process.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Quiz (10%), Assignments (20%), Review of GATE Questions (20%), Internal Examinations (50%)
Source: Official Anna University – B.Tech. Chemical Engineering R-2025 Syllabus
Last Updated: September 2026
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